Pump cylinder



J. H. OBERMAN. JR

Jung 24 PUMP CYLINDERI Svi/vento@ atented .lime 24, i924.

JOSEPH H. OBERMAN, JR., OIE"V GRANVILLE, IOWA.

:PUMP CYLINDER.

Original application filed December 11, 1922, SeralNo. 606,108. Divided and this application filed August 29, leas. seiiai No. 659,960.

To all whom t may concern/L:

Be it known that I, Josu-rrr H. OBERMAN, J r., a citizen of the United States, residing at Granville, inthe county of Sioux and State of Iowa, have invented certain new and useful Improvements in Pump Cylinders, of which the following is a specification. f

This application is a division of an application iiled by me December 11, 1922,

. Serial No. 606,108.

The present invention relatesto the working cylinder of a pump and seeks to provide a durable lining therefor.

The invention is illustrated in the accompanying drawing and will be hereinafter fully set forth.

In the drawing:

Figure 1 is a side elevation of a port-ion of my pump;

F ig. 2 is a vertical section, and

Fig. 3 is a detail perspective of the. upper end of the lining.

ln the drawing, 3 denotes a portion of a base having a guiding and supporting sleeve 6 thereon, and 9 denotes a standard supporting the pump-operating mechanism. A head 31 and a fulcrum post 45 are carried at the upper end of the standard 9 and the lever 46 is fulcrumed upon the post to extend through the head and be connected to the bar 42 which is guided by the head and coupled to the upper end of the plunger rod 48. The plunger rod 48 eX- tends downwardly through the upper cylinder 50 and into the lower cylinder 51. It is to be understood that the lower cylinder 51 may be disposed at any depth, to be determined by the depth of the well, and in the present illustration it is shown as threaded into a iange 52 on the under side of a bridge piece 13 which is provided with passages whereby the water may be delivered at the well or directed to a more distant point, as desired. If, however, the well is very deep, the cylinder will be connected with this flange by an intermediate pipe or tubing, the length of which will, of course, be determined by the depth of the well, the lower end of the lower cylinder being equipped with a suction pipe or otherwise arranged to admit the water. The plunger rod 48 is preferably constructed in sections connected by a coupling sleeve 55 so that the parts may be readily assembled and disassembled as occasion may require, and upon the upper end of the lower section is carried the upper plunger 56. The upper cylinder 50 has its upper end threaded into the lower' end of a cylindrical block or head 62 which hasa reduced upper end 63 provided with Hat faces, as shown at 64. A-nipple 501 is threaded into the upper end of the block 62 and upon the upper end of the nipple is secured a cap 65 which encircles the plunger rod 48 and serves as a guide for the same. The coupling block or head 62 fits closely but rotatably within the sleeve 6, and this sleeve is constructed with a helical slot oropen ing 66 in/which a pin or stud upon the head 62 may play, a roller 68 being preferably mounted upon the said stud to reduce the frictional wear. The helical slot or opening 66 in the sleeve 6 extends nearly around the complete circumference of the sleeve, andat its upper end it opens into a longitudinally disposed notch 69 which will permit vertical movement of the stud 67 and the roller 68 so that, when the parts are properly positioned, the plunger rod, the coupling head, nipple, and cylinder may be lifted vertically and drawn through and from the sleeve 6.

The lower end of the upper cylinder 50 is disposed within a packing cup 7 5 secured upon the upper side of the bridge piece 13, a suitable gasket 76 being interposed between the upper surface ofV the bridge piece and the under surface of the packing cup, as will be readily understood. The packing cup is provided internally with an annular shoulder 77 against which the edge of the packing ring or diaphragm 7 8 may enga-ge, the said packing ring or diaphragm resting upon the upper end of a. spider 79 which is threadedI onto the lower end of shoulder or collar 80 which is threaded onto the cylinder with the packing ring disposed between the spider' and the shoulder and clamped thereby. It will be readily understood that, when the parts are associated in proper relation, the packing will be forced against the internal surface of the packing cup and the pressure of the water which may reach the packing ring' will simply force it Youtwardly more closely against the packing cup and thereby aid in making the joint leak-proof. The plunger 56 works closely within a lining 81 in the cylinder 50, which lining is of brass, porcelain, or other material that will not corrode under the action of the water. rEhe lower end of the lining is flared, as indicated at 82, so that the plunger may readily enter the same in the event that it should Vhappen to make a stroke carrying it below the lining, while the upper end of the lining is constructed with claws or spurs S3 iitting in openings 84 in the cylinder. The said claws or teeth 83 prevent downward movement of the lining, while the iared formation on its lower end will prevent upward movement thereof. The slots Se in the cylinder provide drain openings so that if, through wear, the washers or packing on the upper plunger should leak the water cannot rise into the head 62 and freeze there to hold the plunger rod.

The shoulder 8O is provided externally wit-h longitudinal grooves or notches 85 so that it may be readily engaged by a turning tool when the parts are to be separated,l

lf repairs to the plunger or the cylinder should be necessary, the'flat bar 4t2 which constitutes the upper extremityY ot the plunger rod is disconnected and removed from the head. One of the head-securing bolts is then removed and the head 31 may then be swung rearwardly about the other bolt as a pivot. The elements fastening the head 62 in the sleeve 6 are then withdrawn and a wrench or other tool is tted to the reduced end 63 of the coupling head 62 and said head is rotated so that the stud thereon will be brought to the lower end of the vertical notch 69, alter which the ca-p 65 and the nipple 501 are iirmly grasped and lifted. lt will be readily noted that the diameter of the head 62 and the internal diameter oi the sleeve 6 are some what greater than the external diameter ol' the packing 78 so that, when the cylinder is liited, it may be drawn through the sleeve 6 until the lower end or the plunger rod is above the upper end of the said sleeve, whereupon the plunger may be supported by resting upon the upper edge ot the sleeve G. The plunger rod is then disconnected :trom the said coupling and the plunger and the cylinder may be repaiigefjl at once or laid -aside to be repaired as circumstances require or permit. Inasinuch as the coupling head 62 is firmly secured to the cylinder 50, the rotation of the head will, of course, rotate the cylinder and, therefore, the parts mounted on the lowerl end ot the cylinder will rise with it as the roller 68 travels upwardly along the helical slot G6. rhe plunger rod may possibly tend to move downwardly through the cylinder as this upward movement is impart-ed to the cylinder, but such downward movement of the plunger will be arrested by contact of the yoke at the upper end ot the plunger rod with the cap G so that the plunger will be withdrawn from the well with the cylinder.

Having thus described the invention, what is claimed as new is:

Y In a pump, the combination of a cylinder having openings through its wall, ot' a lining having its upper end provided with laterally projecting teeth to engage said openings and having its lower end flared beneath the lower end of the cylinder, a plunger working in the said lining, and means 'tor operating the plunger.

ln testimony whereof l affix my signature.

Josnrn H. oBEnMAN, JR. [L s.) 

